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Mirrors > Home > MPE Home > Th. List > oppgsubg | Structured version Visualization version GIF version |
Description: Being a subgroup is a symmetric property. (Contributed by Mario Carneiro, 17-Sep-2015.) |
Ref | Expression |
---|---|
oppggic.o | ⊢ 𝑂 = (oppg‘𝐺) |
Ref | Expression |
---|---|
oppgsubg | ⊢ (SubGrp‘𝐺) = (SubGrp‘𝑂) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | subgrcl 18276 | . . 3 ⊢ (𝑥 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp) | |
2 | subgrcl 18276 | . . . 4 ⊢ (𝑥 ∈ (SubGrp‘𝑂) → 𝑂 ∈ Grp) | |
3 | oppggic.o | . . . . 5 ⊢ 𝑂 = (oppg‘𝐺) | |
4 | 3 | oppggrpb 18478 | . . . 4 ⊢ (𝐺 ∈ Grp ↔ 𝑂 ∈ Grp) |
5 | 2, 4 | sylibr 237 | . . 3 ⊢ (𝑥 ∈ (SubGrp‘𝑂) → 𝐺 ∈ Grp) |
6 | 3 | oppgsubm 18482 | . . . . . . 7 ⊢ (SubMnd‘𝐺) = (SubMnd‘𝑂) |
7 | 6 | eleq2i 2881 | . . . . . 6 ⊢ (𝑥 ∈ (SubMnd‘𝐺) ↔ 𝑥 ∈ (SubMnd‘𝑂)) |
8 | 7 | a1i 11 | . . . . 5 ⊢ (𝐺 ∈ Grp → (𝑥 ∈ (SubMnd‘𝐺) ↔ 𝑥 ∈ (SubMnd‘𝑂))) |
9 | eqid 2798 | . . . . . . . . 9 ⊢ (invg‘𝐺) = (invg‘𝐺) | |
10 | 3, 9 | oppginv 18479 | . . . . . . . 8 ⊢ (𝐺 ∈ Grp → (invg‘𝐺) = (invg‘𝑂)) |
11 | 10 | fveq1d 6647 | . . . . . . 7 ⊢ (𝐺 ∈ Grp → ((invg‘𝐺)‘𝑦) = ((invg‘𝑂)‘𝑦)) |
12 | 11 | eleq1d 2874 | . . . . . 6 ⊢ (𝐺 ∈ Grp → (((invg‘𝐺)‘𝑦) ∈ 𝑥 ↔ ((invg‘𝑂)‘𝑦) ∈ 𝑥)) |
13 | 12 | ralbidv 3162 | . . . . 5 ⊢ (𝐺 ∈ Grp → (∀𝑦 ∈ 𝑥 ((invg‘𝐺)‘𝑦) ∈ 𝑥 ↔ ∀𝑦 ∈ 𝑥 ((invg‘𝑂)‘𝑦) ∈ 𝑥)) |
14 | 8, 13 | anbi12d 633 | . . . 4 ⊢ (𝐺 ∈ Grp → ((𝑥 ∈ (SubMnd‘𝐺) ∧ ∀𝑦 ∈ 𝑥 ((invg‘𝐺)‘𝑦) ∈ 𝑥) ↔ (𝑥 ∈ (SubMnd‘𝑂) ∧ ∀𝑦 ∈ 𝑥 ((invg‘𝑂)‘𝑦) ∈ 𝑥))) |
15 | 9 | issubg3 18289 | . . . 4 ⊢ (𝐺 ∈ Grp → (𝑥 ∈ (SubGrp‘𝐺) ↔ (𝑥 ∈ (SubMnd‘𝐺) ∧ ∀𝑦 ∈ 𝑥 ((invg‘𝐺)‘𝑦) ∈ 𝑥))) |
16 | eqid 2798 | . . . . . 6 ⊢ (invg‘𝑂) = (invg‘𝑂) | |
17 | 16 | issubg3 18289 | . . . . 5 ⊢ (𝑂 ∈ Grp → (𝑥 ∈ (SubGrp‘𝑂) ↔ (𝑥 ∈ (SubMnd‘𝑂) ∧ ∀𝑦 ∈ 𝑥 ((invg‘𝑂)‘𝑦) ∈ 𝑥))) |
18 | 4, 17 | sylbi 220 | . . . 4 ⊢ (𝐺 ∈ Grp → (𝑥 ∈ (SubGrp‘𝑂) ↔ (𝑥 ∈ (SubMnd‘𝑂) ∧ ∀𝑦 ∈ 𝑥 ((invg‘𝑂)‘𝑦) ∈ 𝑥))) |
19 | 14, 15, 18 | 3bitr4d 314 | . . 3 ⊢ (𝐺 ∈ Grp → (𝑥 ∈ (SubGrp‘𝐺) ↔ 𝑥 ∈ (SubGrp‘𝑂))) |
20 | 1, 5, 19 | pm5.21nii 383 | . 2 ⊢ (𝑥 ∈ (SubGrp‘𝐺) ↔ 𝑥 ∈ (SubGrp‘𝑂)) |
21 | 20 | eqriv 2795 | 1 ⊢ (SubGrp‘𝐺) = (SubGrp‘𝑂) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ∀wral 3106 ‘cfv 6324 SubMndcsubmnd 17947 Grpcgrp 18095 invgcminusg 18096 SubGrpcsubg 18265 oppgcoppg 18465 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-tpos 7875 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-nn 11626 df-2 11688 df-ndx 16478 df-slot 16479 df-base 16481 df-sets 16482 df-ress 16483 df-plusg 16570 df-0g 16707 df-mgm 17844 df-sgrp 17893 df-mnd 17904 df-submnd 17949 df-grp 18098 df-minusg 18099 df-subg 18268 df-oppg 18466 |
This theorem is referenced by: lsmmod2 18794 lsmdisj2r 18803 |
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